Door lock



Dec. 1, 1 936.

W. R. SCHLAGE DOOR LOCK Filed NOV.-7, 1934 3 Sheets-Sheet 1 INVENTOR.

Dec. 1,1936. w. R. SCHLAGE 2,062,766

" DOOR LOCK Filed Nov., 7, 1934 3 Sheets-Sheet 2 6 INV NTOR.

- BY v AYTTORNE s.

Patented Dec. 1, 1936 UNITED STATES PATENT OFFICE} to Schlage Lock Qnmnan San Francisco,

Calif., a. corporation of California Application November 7, 1934, Serial No. 751,853

20 Claims.

This invention relates to door locks, and particularly to looks intended for hollow metal doors; the present application being a continuation in partof my co-pending application entitled "Door look for hollow metaldoors, filed February 13, 1933, Serial Number 656,467,patented November 20, 1934, No. 1,981,289. 4

The object of the present invention is generally to improve and simplify the construction and reduce the number of parts required to a minimum; to provide a lock in which the latch bolt is secured to a retractor plate and in, which said plate normally functions to dog or secure the knob spindle of. the lock against endwise removal; to provide means for moving the retractor plate to a position where it will release the knob spindle and permit endwise removal of the same; to provide a spindle dogging plate whereby the knob 20 spindle may be dogged or locked against rotation to prevent retraction of the latch bolt; to provide a locking bar which extends through the spindle and by rotation of which the spindle dogging plate may be moved to or out of dogging position and retained in either position; to provide means whereby the locking bar may be rotated either manually or by key actuated means; and further, to provide a slotted frame or housing whereby the retractor and the spindle dog- 30 ging plate are supported and guided.

The lock is shown by way of illustration in the accompanying drawings, in which Fig. l is a perspective view of the lock.

Fig. 2 is a perspective'view of a portion of the stile of a hollow metal door. I

Fig. 3 is a central vertical longitudinal sectio of the lock showing it installed in the door.

Fig. 4 is a similar view showing the retractor plate in the position which it assumes when it is desired to remove the knob spindle from the lock.

Fig. 5 is a plan view in section showing the lock installed in the hollow metal door.

Fig. 6 is a perspective view of the retractor plateand the latch bolt'to which it is secured.

stop member.

Fig. 7 is a view similar to Fig. 3, but showing in addition thereto a spindle dogging plate.

Fig-8 is a view similar to Fig. 7. showing the spindle dogging plate in released or undogged 55 ging plate.

operation of locks of the character described; to

said view also showing the plvotally mounted Fig..11 is a perspective view of the central portion of the spindle, said view also showing aportion of the locking bar which extends through the spindle.

Fig. 12 is a cross section taken on line XII-XII 5 of Fig. 13.

Fig. 13 is a plan view in section showing the inner end of the spindle, said viewalso showing a handle whereby the spindle and the locking bar may be rotated independently'of each other 10 by means of a common knob or lever.

Referring to the drawings in detail, and particularly Figs. 1 to 6, inclusive, A and B indicate the opposite faces of the stile of a hollpw metal door, and C the front edge. Formed in the faces 15 A and B are openings 2 and 3, which are provided for the reception of spindle bearings, as

will hereinafter appear, and formed in the front edge C is an opening 4 through which the lock generally indicated at D, see Fig. 1, isadapted to be inserted.

This lock consists of an elongated rectangularshaped frame or .housing consisting of top and bottom plates 5 and 6 and a pair of connected front and rear end plates 1 and 8. Extending through the front plate I is a latch bolt 9 and secured to the inner end thereof is a retractor plate generally indicated at E, see Fig. 6. The front end of the plate is supported andguided by the latch bolt while the rear end'is guided by a pair of lugs Ill-40, which extend through slots or guideways I l-l I formed in the top and bottom plates of the housing. Formed adjacent the rear end of the retractor plate is an opening II, the forward end of saidopening being rounded while the rear end terminates in a pair of shoulders l3-.l3 and a central slot II. The opening I2 is provided for the reception of the roll-back portion I5 of the knob spindle generally indicated at l6, said roll-back portion being formed by 40 transversely slotting the central portion of the spindle as indicated at l-I, see Fig. 11.

The rear portion of the retractor plate. includins-the shoulder members lI-|3 and the con-. necting barl8, enters the transverse slot and normally lies therein, this being important as, this portion of the retractor plate functions as a dogging member to secure the spindle against endwise removal from the look. This dogging I portion of .the-retractor plate may, however, be manually moved into the position shown in Fig. 4, where it clears: the transverse slot in the spindle and in that position the pindle may be removed as will hereinafter be described.- I

' A spring I! is interposed between tberear end plate 8 of the housing and the: end of the retractor plate. This spring serves two main -func-. tions, flrst that of maintaining the latch bolt in a projected position, and secondly that of maintaining the shoulders 13 in engagement with the roll-back member, and they also serve a third Itmction, to-wit, of always returning the spindle and the kn carried thereby to normal position after the knobs, have been rotated by hand and released. "3,,

Forward movement of the retractor plate and the latch bolt is limited by'shoulders Ila formed in the forward end of the guideways II-I I. Rearward or inward movement of the latch bolt and retractor plate is normally limited by a stop member generally indicated at 20. This member consists of a bar which is pivotally secured to one side of the retractor -plate at 2|. The bar is normally held in a vertical position by means of a spring 22 and in this position it engages a stop lug 23. When the retractor plate and latch bolt areretracted by means of the roll-back member engaging either of the shoulders I3, such retracting movement will be limited when the stop member engages a shoulder 20a; that is, the outer end of the stop member projects through a slot 20b in the housing and is guided thereby and, when the retractor plate is retracted, inward movement is limited when the stop member engages the inner shoulder 2IIa'ot the slot. This movement is such that the shoulders I3--II and a portion of the rear bar I8 will remain in the transverse slot ll of the spindle, thus during normal movement of the retractor plate the retractor plate will function to dog the spindle against endwise removal. There are, however, conditions under which it may be desirable to remove the spindle for inspection, repair, or otherwise. This .is accomplished as shown in Fig. 4 by inserting a pin 24 through an opening formed in the front'plate I of the look. This pin, when inserted, engages the pivotally mountedstop member 20 and rocks it about its pivot as shown in Fig. 4, and as it has been rocked continuedinward movement of pin 2l will force the retractor plate and the latch bolt inwardly a sufficient distance so that the shoulders I3I3 will clear the transverse slot I'I oi the spindle, thus permitting the spindle to be removed in an endwlse direction. By merely removing the pin 2| the stop member will swing forwardly to normal position and spring I! will iorce the retractor plate and latch bolt forwardly to normal position, thus returning the parts to normal dogging Pos tion after the spindle has been reinserted and thereby causing dogging of the same.

The latch illustrated in Figs. 1 to 6 is the simplest tom of the latch, the main parts em- U ployed. being the housing, the spindle, the retractor plate, the latch bolt carried thereby and the-stop member 20. This-type of latch is suitable for inside doors where locking of the door is unnecessary, it being also suitable for closet doors andthe-like.

' Where locking of the door becomes necessary the type of lock shown in Figs. 7 tg l 3,inclusive, will be employed. This lock is identical to the .latch so far described, with the exception that two more members have been added, to-wit, a spindle dogging plate generally indicated-at F, see Fig. 10, and a locking bar generally indicated 1 at G,seeFigs.9and:l1. 7 e spind e loc i plate I is s btlen a identical in shape to the retractor plate, and during normal operation moves in unison with the same. It is. guided at its rear end by lugs Illa which extend into the guideways I I-I I, the front end being slotted as shown at to straddle the pivot pin 2I of the stop member 20. The front end of the spindle dogging plate is thus guided by the pivot pin 2|, while the rear end is guided by the lugs Illa. The central opening adjacent the rear end of the plate is shaped substantially the same as the retractor plate, with this difference that the central notch 'Il terminates in a vertical rear wall Ila. Also; it will be noted that a dogging lug 3] has been provided, this dog being carried by the rear bar I8a. A spring IBa engages the inner end of the'spindle dogging plate and maintains it in a position where the inner end of the slot Ill engages the pivot pin .2I. When the spindle is rotated the roll-back portion I5 will engage the shoulders I3-I3 of the retractor plate and it will simultaneously engage the shoulders I34 of the spindle dogging plate; hence causing both plates to move rearwardly in unison. Means have, however, been provided for imparting movement to the spindle dogging plate independently of the movement transmitted by the roll-back member and this is accomplished as follows.

Extending through the spindle is a locking bar (3-, one end of which is supported and actuated by a finger turn-piece 32, while the opposite end is supported and connected with a key actuated mechanism generally indicated at 35. -The central portion of the pin is flattened as shown at 33 -and this flattened portion will either assume a vertical position shown in Fig. 7, or a horizontal position as shown in Fig. 8. If the locking bar has been turned so the flattened portion will assume' the horizontal position shown in Fig. 8, the dogging lug 3| will be free of the spindle and the spindle latch bolt. On the other hand if the locking bar is rotated either by the tum-piece or the key actuated mechanism so that. theflattened portion of the bar assumes the vertical position shown in Fig. -7; the dog 3| will enter a notch 3Ia, on the spindle and the spindle will be dogged against rotation; hence making it impossible to rotate the spindle by either or the knobs but if a'person is in possession of a key and is on the outside of the door, he or she may insert it and rotate the bar to assume the horizontal position shown in Fig. 8,

with the result when the bar assumes this position the spindle dogging plate will be moved rearwardly by engagement of the flat portion of the locking bar with a vertical wall Ila on the central notch. The movementthus imparted is just suiflcient to force the dogging plate rearwardly to a point where the dog 3| will clear the notch 3Ia, thus undogging the spindle and leaving it free to rotate; hence by providing the dogging spindle plate and the locking bar just described it becomes possible to dog the spindle against retraction either from the inner or outer side of the door..

Where a lock of this character is employed in will be employed and the key mechanism may be bedroom doors a turn-piece such as shown at 32 eliminated, as in that instance it is only desirable 1 to lock the door from the inside aswhen retiring for the night. Again where the lock is used for rear or front doors a key. mechanism should be employed in conjunction with the tum-piece so that the door maybe opened or locked either from the exterior or interior.

.40 may be rotated to retract or project the I It should also be noted that if a person is leaving the house by the front door it is possible to lock the door by merely opening it and turning the turn-piece to bring the flat portion of the .bar into the vertical position shown in Fig. '7,

then by merely walking out and slamming the door, the door will be looked as depression of the latch bolt during the closing of the door will not disturb the position of the locking bar. In other words the latch bolt is always yieldable whether v the locking bar has been set for dogging position or not and no damage can thus occur, if the door is slammed, if the locking bar has been set to lock the door.

In Fig, 9 the locking bar G is shown as being adapted to be rotated either by the turn-piece 32 or the key actuated mechanism 35. In Figs. 12 and 13 a structure is shown which permits the use of a knob or handle 42 for the same purpose; that is, the handle 42 extends intothe spindle and carries a spring actuated pin 43 which extends into a slot 44 formed in the spindle. The bar G is secured to the knob or handle portion which extends into the spindle; hence in rotating the handle 42 the bar may be rotated independently of the spindle 16 as the pin 43 projects into the slot 44 but when the pin 43 engages either end of the slot the rotation will be transmitted to the spindle; hence means is shown whereby either a -knolo or handle may be employed not only for actuating the locking bar but also for rotating the spindle.

The entire'mechanism disclosed is exceedingly simple and substantial in construction. The parts may be cheaply manufactured as they lend themselves to punch and die operations. The parts employed are also few in number and cost of manufacture can accordingly be materially reduced. In installing the lock in the hollow metal. stile, such as shown, the spindle i6 may be journaled in bushings 40, screwed into the openings 2 and 3 formed for their reception, or side plates carrying bearing bushings such as disclosed in my co-pending application already referred to may be employed; this being of no importance as different methods of securing the housing within the lock and joining the spindle may be employed.

While other features of the present invention are more or less specifically described, I wish it understood that various changes may be resorted to within the scope of the appended claims. Similarly, that the materials and finish of the several parts employed may be such as the manufacturer may decide, or varying conditions or uses may demand.

Having thus described my invention, what I claim and desire to secure by Letters Patent is:-

1. In a lock of the character described a housing consisting of a top and bottom and a pair of end plates, a latch bolt extending through one end plate, a retractor plate secured to the latch bolt and disposed at right angles'to the top and bottom plates of the housing, a spindle extending through the housing and an opening formed in the retractor plate, said spindle having a transverse slot formed therein into which a portion of the retractor plate extends to secure the spindle against endwise removal with relation to the retractor plate and the housing, a roll-back member on the spindle whereby reciprocal movement is transmitted to the retractor plate and the latch bolt, and a stop member limiting reciprocal movement of the retractor plate to prevent the portion of the retractor plate which extends into the transverse slot of the'spindle from clearing said slot.

2. In a lock of the character described a hou'sing consisting of a top and bottom and a pair of end plates, a latch bolt extending through one end plate, a retractor plate secured to the latch bolt and disposed at right angles to the top and bottom plates of the housing. a spindle extending through the housing and an opening formed in the retractor plate, said spindle having a transverse slot formed therein into which a portion of the retractor plate extends to secure the spindle against endwise removal with relation to the retractor plate and the housing, a roll-back memplate to permit endwise removal of the spindle.

3. In a lock of the character described a housing consisting of a top and bottom and a pair of end plates, a latch bolt extending through one end plate, a retractor plate secured to the latch bolt and disposed at right angles to the top and bottom plates of the housing, a spindle extending through the housing and an opening formed in the retractor plate, said spindle having a transverse slot formedtherein into which a portion of the retractor plate extends to secure the spindle against endwise removal with relation to the retractor plate and the housing, a roliback member on the spindle whereby reciprocal movement is transmitted to the retractor plate and the latch bolt, a stop member pivotally mounted on the'retractor plate and engageable with the housing to prevent movement of the retractor plate to a point where it clears the transverse slot in the spindle, said stop member being depressible to render it inoperative.

4. In a lock of the character described a housing having a latch bolt mounted therein, a retractor plate connected with the latch bolt, a spindle and a roll-back member for actuating the retractor'plate and the latch bolt, a reciprocal dogging member carried by the retractor plate movable into or away from the spindle for dogging the spindle against rotation with relation to the retractor plate, and means operable from one end of the spindle for moving the dogging memberinto or out of dogging position.

5. In a lock of the character described a housing end of the spindle for moving the dogging member into or out of dogging position.

6. In a lock of the character described a housing having a latch bolt mounted therein, a retractor plate connected with the latch halt, a spindle and a roll-back member for actuating the retractor plate and the latch bolt, a reciprocal spindle dogging plate carried by the retractor v plate movable to or away from the spindle for dogging the spindle against rotation with retractor plate and the latch bolt, a reciprocal lation to the retractor plate, and means for moving the spindle dogging plate into or out of dogging position.

7. In a. lock of the character described a housing having alatch bolt mounted therein, a retractor plate connected with the latch bolt, a spindle and a roll-back member for actuating the retractor plate and the latch bolt, a reciprocal spindle dogging plate carried by the retractor plate movable to or away from the spindle for dogging the spindle against rotation with relation to the retractor plate, a bar mounted in the spindle, and means on said bar for moving the spindle dogging plate into or out of dogging position.

' 8. In a lock of the character described a housing having a latch bolt mounted therein, a retractor plate connected with the latch bolt, a spindle and a roll-back member for actuating the respindle dogging plate carried by the retractor plate movable to or away from the spindle for dogging the spindle againstrotation withrelation to the retractor plate, a rotatable bar mounted in the spindle, and means on said bar for moving the spindle dogging plate into or out of dogging position.

9; In a lock of the character described a housing having a latch bolt mounted therein, a retractor plate connected with the latch bolt, a spindle and a roll-back member for actuating the retractor plate and the latch bolt, a spindle dogging-plate i'or dogging the spindle against rotation, a bar extending through the spindle, means at either end of the spindle for rotating the bar, and means actuated by rotation of the bar for moving the spindle dogging plate into or out of dogging position.

10. In a lock or the character described a housing having'a latch bolt mounted therein, a retractor plate connected with the latch bolt, a

spindle and a roll-back member for actuating the 11. In a lock of the character. described a housing having a latch bolt mounted therein, a retractor plate connected with the latch bolt, '9. spindle plate, a spindle and a roll-back member for imparting a reciprocal movement to the retractor and the spindle plates in unison, a dogging member on the spindle plate for dogging the spindle and roll-back-member against rotation, and means for moving the spindle plate and the dogging member carried thereby independently of the retractor plate to move the dogging member into and out of dogging engagement with the spindle.

12. In a lock of the, character described a housing having a latch bolt mounted therein, a

retractor plate connected with the latch bolt, a 1

spindle plate, a spindle and a roll-back member for imparting a reciprocal movement to the retractor and the spindle plates in unison, a dogging member on the spindle plate for dogging the spindle and roll-back member against rotation, and means extending through the spindle for imparting movement to the spindle plate andthe dogging member carried thereby independently of the retractor plate, said means moving the dogging member into and out of dogging engage ment with the spindle.

13. In a lock of the character described a housing having a latch bolt mounted therein, a retractor plate connected; with the latch bolt, 0. spindle plate, a spindle and a roll-back member for imparting a reciprocal movement to the retractorand the spindle plates in unison, a dogging member on the spindle plate for dogging the spindle and roll-back member against rotation, a' rotatable bar extending through the spindle and operable from either end thereof, and means actuated by rotation of said bar for imparting movement to the spindleplate and the dogging member carried thereby independently or the retractor plate, saidmeans moving the dogging member into and out of dogging engagement with the spindle.

14. In a lock or the character described, a housing, a latch bolt mechanismmounted for reciprocal movement therein, a stop member carried by the latch bolt mechanism normally limiting its movement inward with relation to the housing, said stop member being depressible to permit extended inward movement of the latch bolt mechanism.

15. In a lock of the character described, a housing, a latch bolt retractor mounted for reciprocal movement therein, a stop member carried by the retractor and adapted to assume two positions, a normal position in which it engages the housing and limits the movement of the retractor and a second position'in which it disengages the housing and permits extended movement of the retractor.

16. In a lock 01' the character described, a housing, a latch bolt retractor mounted for reciprocal movement therein a manipulative stop engageable with the housing adapted to limit or extend movement of the retractor with relation to the housing, an actuator disposed at right angles to the retractor and forming, a roll-back connection and interlock therewith, said interlock retaining the actuator against endwise separation from the retractor except by manipulation of the stop.

17. In a lock of the character described, a

housing, a latch bolt retractor mounted for' movement therein, manipulative means engageable with the housing and retractor for allowing extension of the normal movement of the retractor with relation to the housing, bearings mounted on each side of the retractor tor the reception of a spindle to actuate the retractor, said spindle being either insertable or removable from the bearings only when the latch bolt retractor has been moved to extended position.

18. In a lock of the character described, a housing, a latch bolt retractor plate mounted for reciprocal movement therein, a'releasable stop permitting both a normal and extended in-. ward movement or the retractor plate with relation to the housing, bearings mounted oneach side of the retractor plate for reception of a rotary spindle, an openingin the retractor plate, said opening permitting insertion and removal of the spindle only when the retractor plate is in the extended inward position.

19. In a loci; of the character described, a housing, a latch bolt retractor mounted for reciprocal movement therein, a spindle rotatabiy mounted in the housing, said spindle forming an interlock with the retractor upon its insertion, and selective means carried by the retractor and engageable withthe housing and adapted to prevent or permit release oi-the spindle from the interlock.

20. In a lock of the character described, a housing, a latch bolt retractor plate mounted for reciprocal movement therein, a hollow spindle rotatably mounted in the housing, said spindle forming an interlock and an operative connection with the retractor plate upon its insertion,

a stop member intermediate the housing and the retractor plate adapted to limit inward moveinward. movement of the retractor plate and 5 thereby release the spindle Irom the interlock. WAL I'ER R. semen. 

